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lec6_jls

# lec6_jls - BE.104 Spring Concepts in Variance or"Oh What a...

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BE.104 Spring Concepts in Variance or "Oh, What a Fuzzy World We Live In" J. L. Sherley I. Making Variance Many know mathematical formalism. Few understand the origin of variance. Generate some & study it. 1. The length of desks versus the length of forearms 2. Pitching pennies 3. Random sampling Frequency plots, histograms, and distributions A) How to think about the data? B) How to organize it? C) The Freq. Plot = distribution of the data D) Vary bins, grouping intervals. Looks different, but does not alter the distribution's mathematical parameters E) What can we say about the variance in the measurements? Why aren’t they single lines? 1) Quantitative error (instrument, user) 2) Investigator error (mistakes, recording errors, judgement) 3) Biological Variation and Variability 4) Seasonal Variation (also circadian variation) 5) Statistical Variation (Chance variation) How do we use distributions? A.

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• Spring '06
• LindaGriffith
• Probability theory, investigator, seasonal variation, statistical variation, biological variation, chance variation

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lec6_jls - BE.104 Spring Concepts in Variance or"Oh What a...

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